ACE StudioMediumStandard

ACE-Step

ACE-Step open music foundation model via Replicate. Generates up to 4 minutes of music with vocals from style tags and structured lyrics, with full control over steps, scheduler and guidance. Billed per second of requested duration.

16 credits

per 60s at 60 steps — (2.72 + 0.21 × seconds) × steps/60, measured

Open-source music model with vocals

Up to 240 seconds per generation

Style tags instead of prose prompts

Full control of steps, scheduler and guidance

Measured pricing: 16 credits per minute at default steps

Run it right now

Test this model instantly in the Console Playground — no code required

Use with AI Assistant

Copy usage instructions for Claude, ChatGPT, or other AI

llms.txtllms.txt ↗

Quick Start

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "lucataco/ace-step",
  "input": {
    "tags": "k-pop, electro-pop, company jingle, synth brass, punchy drums, 128 BPM, energetic, playful, female vocals, korean",
    "lyrics": "[verse]\n아침부터 AI, 커피보다 진해\n코딩하다 보니 벌써 새벽 두 시네!\n안 되는 건 없어, 일단 만들어 봐\n상상이 현실 되는 마법 같은 회사!\n\n[chorus]\n코어! 닷! 투데이!\n오늘의 상상이 내일의 기술로!\n코어! 닷! 투데이!\nAI도 놀라는 우리의 아이디어!\n\n[outro]\n뚝딱뚝딱 만들고, 반짝반짝 빛내고!\n기술을 넘어 경험으로!\n코어닷투데이, Hey!",
    "duration": 60
  }
}'

Parameters

Parameter	Type	Required	Default	Description
`tags`	string	Yes	-	Comma-separated style tags, e.g. 'synth-pop, electronic, 128 BPM, energetic'
`lyrics`	string	No	-	Lyrics with [verse], [chorus], [bridge] sections. Use [instrumental] or [inst] for instrumental music
`duration`	number	No	60	Duration of the generated audio in seconds (1-240). Billed per second
`number_of_steps`	integer	No	60	Number of inference steps (10-200)
`seed`	integer	No	-1	Random seed. -1 randomizes
`scheduler`	string	No	euler	Scheduler type eulerheun
`guidance_type`	string	No	apg	Guidance type for CFG apgcfgcfg_star
`guidance_scale`	number	No	15	Overall guidance scale (0-30)
`granularity_scale`	number	No	10	Omega scale for APG guidance (-100 to 100)
`guidance_interval`	number	No	0.5	Guidance interval (0-1)
`guidance_interval_decay`	number	No	0	Guidance interval decay (0-1)
`min_guidance_scale`	number	No	3	Minimum guidance scale (0-100)
`tag_guidance_scale`	number	No	0	Guidance scale for tags (0-10)
`lyric_guidance_scale`	number	No	0	Guidance scale for lyrics (0-10)

Common Parameters

Common parameters used when calling POST /v1/predictions.

Parameter	Type	Required	Default	Description
`model`	string	Yes	-	Model identifier
`input`	object	Yes	-	Object containing the model-specific parameters from the table above
`output_folder`	string	No	-	Folder path for output files (max 256 chars, '..' not allowed)
`webhook_url`	string	No	-	Webhook URL to call on completion
`is_public`	boolean	No	false	If true, output files are also available via permanent public URLs

Examples

Core.Today company song

The same Korean company-song lyrics given to every music model — compare how each one sings them

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "lucataco/ace-step",
  "input": {
    "tags": "k-pop, electro-pop, company jingle, synth brass, punchy drums, 128 BPM, energetic, playful, female vocals, korean",
    "lyrics": "[verse]\n아침부터 AI, 커피보다 진해\n코딩하다 보니 벌써 새벽 두 시네!\n안 되는 건 없어, 일단 만들어 봐\n상상이 현실 되는 마법 같은 회사!\n\n[chorus]\n코어! 닷! 투데이!\n오늘의 상상이 내일의 기술로!\n코어! 닷! 투데이!\nAI도 놀라는 우리의 아이디어!\n\n[outro]\n뚝딱뚝딱 만들고, 반짝반짝 빛내고!\n기술을 넘어 경험으로!\n코어닷투데이, Hey!",
    "duration": 60
  }
}'

Synth-pop with lyrics

Tag prompt plus sectioned lyrics, 60 seconds

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "lucataco/ace-step",
  "input": {
    "tags": "synth-pop, electronic, pop, synthesizer, drums, bass, piano, 128 BPM, energetic, uplifting, modern",
    "lyrics": "[verse]\nWoke up in a city that's always alive\nNeon lights they shimmer they thrive\n\n[chorus]\nOh we ride the night\nelectric hearts alight",
    "duration": 60
  }
}'